Hi,

Can You maybe give us some more details? Like how exactly this network and subnets looks like (neutron net-show and neutron subnet-show), and please also check dnsmasq config files - those are located on node where DHCP agent is running. If You will do something like:

ps aux | grep <network_id>

You will find dnsmasq process for this network.

> On 10 Dec 2019, at 16:52, Ignazio Cassano <ignaziocassano@gmail.com> wrote:
>
> Hello Everyone,
> I have an openstack queens installation based on centos 7.
> I created a shared vlan network and multiple subnet under it.
> When I start an instance on one of the subnet network it gets the correct ip based on its subnet but the gateway seems random (one of the subnet of the vlan).
>
> Any suggestion, please ?
>
> Ignazio
>

—
Slawek Kaplonski
Senior software engineer
Red Hat